Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes.

Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes.
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手性铕配合物的双光子圆偏振发光。

DOI:
10.1021/jacs.3c05957
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发表时间:
2023-11-22
影响因子:
15
通讯作者:
Di Bari, Lorenzo
Di Bari, Lorenzo
中科院分区:
化学1区
文献类型:
--
作者:
Willis, Oliver G.;Petri, Filippo;De Rosa, Davide F.;Mandoli, Alessandro;Pal, Robert;Zinna, Francesco;Di Bari, Lorenzo

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本文报道了具有扩展π共轭结构的手性镧系配合物的合成,并通过双光子激发(2 PE)实现了高效的圆偏振发光。吡啶双恶唑啉(PyBox)核心提供了手性Ln 3+环境,而通过吡啶4-位与苯乙炔单元的共轭骨架的延伸增加了双光子吸收截面。这项工作提出了一个重要的一步,显示增强的非线性光学性能的手性系统的发展,在成像和传感,以及在光动力治疗由于在特定的焦点体积内的分子的选择性激发的潜在应用。
We report the synthesis of chiral lanthanide complexes with extended π conjugation for efficient circularly polarized luminescence (CPL) via two-photon excitation (2PE). The pyridine bis-oxazoline (PyBox) core provides the chiral Ln3+ environment, while the extension of the conjugated backbone through the pyridine 4-position with a phenylacetylene unit increases the two-photon absorption cross section. This work presents an important step toward the development of chiral systems displaying enhanced nonlinear optical properties, with potential applications in imaging and sensing, as well as in photodynamic therapy due to the selective excitation of molecules within a specific focal volume.
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